Solution needed for poor upstairs airflow

[George2]

How do you highlight the sentences and put them in a box?

Regarding the 600cfm to the second floor being enough, it must not be, he's hot.
Although, it get worse, because he has only 5 supplies and who knows what size or how they are run. Plus, we just found out they are in the floor. That's the worst place to try and A/C a 2nd floor. I would like to see at least 2tons to that area.

You can add return to the 2nd floor all day long and not make a difference if there is not enough supply. Again, assuming there is enough RA to the system now. And I would not take that bet.

Regarding the 600cfm to the second floor being enough, it must not be, he's hot.
Although, it get worse, because he has only 5 supplies and who knows what size or how they are run. Plus, we just found out they are in the floor. That's the worst place to try and A/C a 2nd floor. I would like to see at least 2tons to that area.

You can add return to the 2nd floor all day long and not make a difference if there is not enough supply. Again, assuming there is enough RA to the system now. And I would not take that bet.

[George2]

Regarding the 600cfm to the second floor being enough, it must not be, he's hot.
Although, it get worse, because he has only 5 supplies and who knows what size or how they are run. Plus, we just found out they are in the floor. That's the worst place to try and A/C a 2nd floor. I would like to see at least 2tons to that area.

You can add return to the 2nd floor all day long and not make a difference if there is not enough supply. Again, assuming there is enough RA to the system now. And I would not take that bet.

I don't have it yet.......I'm going to bed..........I'll try tomorrow.

[ThisOldFurnace]

So I'm not seeing a consensus here...

[Sleuth]

So I'm not seeing a consensus here...

.

You'll be old and grey before you do. You can create a poll.

..

[ricky82g]

So I'm not seeing a consensus here...

If you want to go cheap try the manual dampers and use that 12x12 chase to install a return on the second floor in the ceiling. If only one return is going in a hallway you could also cut in pass through grills at the top of each wall adjacent to the hallway return in every room where there is a supply vent and keep the door closed you will then pressurise the room and hot humid air at the top of ceiling will then pass through the room and into the hallway where the main return is or just put a slightly smaller return in each room but thats not too cost effective. My two cents

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